Former Owner
- Philip Kerr, 11th Marquess of Lothian1
- Phillip J. Pirages Fine Books & Manuscripts1
- Phyllis Walter Goodhart Gordan1
- Prince Augustus Frederick, Duke of Sussex1
- Quinton Edward Gurney1
- Ralph Thoresby1
- Ralph Verney, 1st Earl Verney1
- Richard Farmer1
- Richard Greene1
- Richard Halter1
- Richard Hooker1
- Richard Legh1
- Richard Linenthal1
- Richard Maria Domville1
- Richard Mery of Hatfield1
- Richard Rich1
- Richard Sackville1
- Richard Wroe1
- Robert Dallas1
- Robert Elyot1